Table 3 a. Univariate logistic regression analysis of factors associated with adenoma detection after exclusion of Bowel Cancer Screening Programme cases.

Variable	Odds ratio	95 % CI	Pvalue
Time
PM vs. AM	1.08	0.81 – 1.44	0.588
EVE vs. AM	0.58	0.34 – 0.97	0.038
EVE vs. PM	0.53	0.31 – 0.93	0.026
Age > 60 vs. ≤ 60 y	2.67	2.23 – 3.17	0.000
Queue position1
2 vs. 1	1.18	0.88 – 1.56	0.263
3 vs. 1	1.04	0.72 – 1.51	0.830
4 vs. 1	0.97	0.66 – 1.42	0.876
3 vs. 2	0.86	0.68 – 1.15	0.369
4 vs. 2	0.82	0.62 – 1.10	0.194
4 vs. 3	0.93	0.71 – 1.22	0.612
Gender: female vs. male	0.56	0.44 – 0.73	0.000
Trainee presence	1.02	0.69 – 1.52	0.901
Bowel preparation
Satisfactory vs. poor	1.75	1.15 – 2.66	0.009
Good vs. poor	1.82	1.18 – 2.81	0.007
Satisfactory vs. good	1.04	0.85 – 1.27	0.700
Experience	1.14	0.78 – 1.68	0.492

CI, confidence interval; PM, afternoon; AM, morning; EVE, evening.

¹Queue variable was divided into four categories: the fourth category consisted of queues ≥ 4; age was divided into two groups (with 60 years used as a cutoff point) for data-fitting purposes.